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Keeping the Voyager in tune Virtual Instrument Plugins
Old 8th January 2009
  #1
Keeping the Voyager in tune

I was wondering if any of you have encountered any issues keeping your Voyager in tune. I want to record a bassline but as I move up an octave, it tends to get a little flat. Any idea how I get get it in tune at any octave?
Old 8th January 2009
  #2
Gear maniac
 

Sound possible you might have an accoustic problem. If you have bass accoustic issues (Like I do) bass notes sound are out of tune because of the fundamental change in frequency caused by constructive destructive interferance.

Just a possibility. Does it it sound out of tune in headphones?
Old 8th January 2009
  #3
It sounds a little out of tune on headphones as well, and I just stuck logic's tuner on the track just to see and it does seem like it gets a little flat as I go up the keyboard... strange
Old 8th January 2009
  #4
Gear maniac
 

Could record the bass at both octaves and post them and others can see if they hear it out of tune on their own systems?
Old 8th January 2009
  #5
Lives for gear
 
dan p's Avatar
 

I dont have a voyager but i do have an old minimoog model d and it has pots on the back panel to adjust the octave tuning.You could try a volt meter and check to see if you are getting a true octave,other than that see if there is anything in the manual about this!?Then e-mail moog and ask them.LOL


Dan P
Old 8th January 2009
  #6
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bleepbleep's Avatar
 

my voyager goes out of tune occasionally, when it does i have to open it up and retune the oscillators using a tuner and a screw driver. there are three parts to tune per oscillator -
1 - the fundamental frequency
2 - the octave switcher
3 - the octave span

it takes me about 30m - i hour to tune all three oscillators perfectly

email moog for the instructions if you feel confident and patient
Old 8th January 2009
  #7
Quote:
Originally Posted by bleepbleep View Post
my voyager goes out of tune occasionally, when it does i have to open it up and retune the oscillators using a tuner and a screw driver. there are three parts to tune per oscillator -
1 - the fundamental frequency
2 - the octave switcher
3 - the octave span

it takes me about 30m - i hour to tune all three oscillators perfectly

email moog for the instructions if you feel confident and patient
Good post. I second this, although I have not had to do this to my Voyager RME. I have experienced tuning issues when cold-starting my Voyager, after 10 minutes, it is fine.
Old 8th January 2009
  #8
Gear maniac
 

happens it's analog after all. i just use the tuning knob on the bottom left of the unit either by ear or with a tuner for more exact tuning. haven't had any issues on mine nor have i had to open up the box at all
Old 8th January 2009
  #9
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Tibbon's Avatar
You need to go through the tuning procedure, or take it to Moog/authorized service center to have it tuned. It's not hard, but you need a scope/strobe tuner to make it happen and it takes about 30 minutes to get done right. I don't think that Moog has publicily released the procedure, but if you're not able to get it in, they'll likely share with you. Amos is a good guy.
Old 9th January 2009
  #10
Lives for gear
this is a weird thread for me, because my voyager basically never goes out of tune. it is a fairly new unit, but i've always noticed how spot on the tuning is, even immediately upon power on.
Old 9th January 2009
  #11
Lives for gear
 

Your octave scaling is out, it is a simple trim adjustment internally, best done with something like a Peterson virtual strobe tuner or a good frequency counter or digital oscilloscope, but even a Boss guitar tuner will do a reasonable job. It is not a fault condition, it is simply drift in the analog VCO which is par for the course.
Old 9th January 2009
  #12
Lives for gear
 

Quote:
Originally Posted by Amos Gaynes From MOOG ^_^
Here you are; to begin with adjust ONLY the trimmers for keyboard scaling, and note that they are ridiculously sensitive. Tiny, tiny movements are all that is required to make large changes in the keyboard scaling. So, work carefully and make infinitesimally small adjustments to one oscillator's keyboard scaling at a time, and when one is looking good move on to the next and adjust it so it's in unison with the first, then turn off the second and tune the third oscillator, again checking it against the first.

So, in short, adjust trimmer RP9 to set the keyboard scaling for oscillator 1, RP21 for oscillator 2, and RP16 for oscillator 3, and don't touch any of the other trimmers for now.
Osc 1 tuning & scaling info

Here is the info you should need in order to adjust the tuning of oscillator 1 on your Voyager.

First you will need something with which to prop up the chassis so that you can open the back panel while you work. I recommend a stack of books or similar, about 3” thick. Raise the panel to its full upright position and slide your prop under the back so that the panel will rest in a vertical position. Now you can remove the five screws from across the back panel and open the synth.

I have attached a diagram which has the relevant adjustment points highlighted in a lovely shade of blue. There are two multi-turn trimmers (RT1 and RT2), which are tall and boxy with a brass turnscrew at the top, and there is one single-turn trimmer (RP9) which is a squat boxy item with a recessed plastic turning adjustment. The latter, RP9, is the adjustment for the keyboard tracking of oscillator 1. This is the first thing to adjust.

Here is how to set up the Voyager for proper tuning: Go to the Edit menu and select “Init. Defaults,” press Enter, cursor to Yes and press Enter. This will set all of the oscillators to (what should be) unison tuning, all set to Squarewave. By default only oscillator 1 will be turned on.
Next, go back to the Edit menu and select “Pitch Bent amount” – set the pitch bend to Off. This ensures that pitch bend does not inadvertently affect your tuning.
Go to the Mixer section of the control panel and switch off Oscillator 1, and switch on oscillator 2. Do not adjust the oscillator 2 or 3 “fine tune” controls; leave them be so that your tuning is not thrown off by accident.
Hook up your synth to a tuner and use only the master Fine Tune control (lower left of the control panel next to the Glide rate knob) to adjust the master tuning until oscillator 2 is in proper tune. We tune to the low “E” on the keyboard, and then test the keyboard scaling by playing the “E” two octaves up on the keyboard. Generally if this interval is set correctly, then there is very little error across the rest of the keyboard.
So, once you have determined that oscillators 2 and 3 are properly tuned, set the switches in the mixer section so that oscillators 2 and 3 are both turned off and only oscillator 1 is on.

Play the low “E” and check the tuner; is Oscillator 1 in tune? Also, you could turn on oscillator 2 and listen for beating between the oscillators. If Oscillator 1 is not in tune at low E, then we need to make a few adjustments before setting the keyboard scaling. First, adjust the multi-turn trimmer RT2 until oscillator 1 is bang-on pitch at low E. it can help to set the Gate switch on the control panel to On/Ext. so that the note will continue to play while you make adjustments.
Next, set the Oscillator 1 Octave switch on the panel to 2’. Play the same low E key on the keyboard and check the tuning. If it is not in tune (should be E5, I think), adjust the multi-turn trimmer RT1 until oscillator 1 is exactly in tune at the 2’ octave setting. Now switch back to 8’ on oscillator 1 and play the low E key and adjust RT2 if necessary to tune in E3 on your tuner. You may need to go back and forth a time or two between the above steps; when you are finished you should have an oscillator that is in tune at all of the octave settings when playing the same low E key. A note: if the tuning is OK on all lower octaves but it is not correct at the 1’ setting, you can adjust the single-turn trimmer RP11 to correct this.


OK, so now Oscillator 1 is in tune and can be scaled to the keyboard. Turn on Oscillator 2 and listen to be sure that oscillators 1 and 2 are still in unison on the low E. Do not adjust the tuning of oscillator 2! If the two oscillators are not quite in unison, adjust RT2 until they are.
Now play up two octaves on the keyboard; it will probably sound wretched. Very carefully, as it’s quite sensitive, adjust the single-turn trimmer RP9 until oscillators 1 and 2 are in unison again. This will, unfortunately, have some effect on the Osc.1 Range adjustment, so you should play the low E again and see if the oscillators have drifted apart a bit. At this point you might want to switch off oscillator 2 and listen only to oscillator 1 as you fine-tune the adjustments. You will want to alternate between playing the low E and the E two octaves above it… use RT2 to adjust the low E to be in tune, and RP9 (with the utmost delicacy as it is so fiddly) to scale the keyboard such that the high E is in tune. Through all of these adjustments, do not change the panel knobs in any way apart from switching the various oscillators on and off using the mixer section.

This completes the calibration of oscillator 1.

Osc 2 tuning and scaling info

Follow the same procedure as with Oscillator 1 to set up the Voyager for proper tuning: Go to the Edit menu and select "Init. Defaults," press Enter, cursor to Yes and press Enter. This will set all of the oscillators to (what should be) unison tuning, all set to Squarewave. By default only oscillator 1 will be turned on.
Next, go back to the Edit menu and select "Pitch Bend amount" and set the pitch bend to Off. This ensures that pitch bend does not inadvertently affect your tuning. Before you begin to make any changes to the tuning, be sure that your Voyager has been turned on and running for 30 to 60 minutes, so that it can reach a stable operating temperature.

Next, connect your Voyager audio output to a tuner and use only the master Fine Tune control (lower left of the control panel next to the Glide rate knob) to adjust the master tuning until oscillator 1 is in proper tune. We tune to the low E on the keyboard, and then test the keyboard scaling by playing the E two octaves up on the keyboard. If this interval is set correctly, then there is generally very little error across the rest of the keyboard.

Go to the Mixer section of the control panel and switch off Oscillator 1, and switch on oscillator 2. Do not adjust the oscillator 2 or 3 Frequency controls; leave them be so that your tuning is not thrown off by accident.

Play the low E on the keyboard and check the tuner; is Oscillator 2 in tune? Also, you could turn on oscillator 1 and listen for beating between the oscillators. If Oscillator 2 is not in tune at low E, then we need to make a few adjustments before setting the keyboard scaling. First, adjust the multi-turn trimmer RT4 until oscillator 2 is exactly on pitch at low E. If you turned on Oscillator 1 also, you can adjust RT4 until there is no beating between oscillators. If this is confusing, turn off Oscillator 1 and listen only to Oscillator 2. It can help to set the Gate switch on the control panel to On/Ext. so that the note will continue to play while you make adjustments.

Next, set the Oscillator 2 Octave switch on the panel to 2'. Play the same low E key on the keyboard and check the tuning. If it is not in tune (should be E5, I think), adjust the multi-turn trimmer RT3 until oscillator 2 is exactly in tune at the 2' octave setting. Now switch back to 8' on oscillator 2 and play the low E key, and adjust RT4 if necessary to tune in E3 on your tuner. You may need to go back and forth a time or two between the above steps; when you are finished you should have an oscillator that is in tune at all of the octave settings when playing the same low E key.

A note: if the tuning is OK on all lower octaves but it is not correct at the 1' setting, you can adjust the single-turn trimmer RP20 to correct this.

OK, so now Oscillator 2 is in tune and can be scaled to the keyboard. Turn on Oscillator 1 and listen to be sure that oscillators 1 and 2 are still in unison on the low E. Do not adjust the tuning of oscillator 1! If the two oscillators are not quite in unison, adjust RT4 until they are.
Now play up two octaves on the keyboard. Very carefully, as it's quite sensitive, adjust the single-turn trimmer RP21 until oscillators 1 and 2 are in unison again. This will, unfortunately, have some effect on the Osc.2 Range adjustment, so you should play the low E again and see if the oscillators have drifted apart a bit. At this point you might want to switch off oscillator 1 and listen only to oscillator 2 as you fine-tune the adjustments. You will want to alternate between playing the low E and the E two octaves above it; use RT4 to adjust the low E to be in tune, and RP21 (with the utmost delicacy as it is so fiddly) to scale the keyboard such that the high E is in tune. Through all of these adjustments, do not change the panel knobs in any way apart from switching the various oscillators on and off using the mixer section.

At this point, Oscillator 2 should be in tune.



Osc 3 tuning and scaling info

Here is the info you should need in order to adjust the tuning of oscillator 3 on your Voyager.

See the diagram for oscillator 3 tuning trimmer locations. There are two multi-turn
trimmers (RT5 and RT6), which are tall and boxy with a brass turnscrew at the top, and there is one single-turn trimmer (RP16) which is a short square item with a recessed plastic turning adjustment. The latter, RP16, is the adjustment for the keyboard tracking of oscillator 3.

Here is how to set up the Voyager for proper tuning: Go to the Edit menu and select "Init. Defaults," press Enter, cursor to Yes and press Enter. This will set all of the oscillators to (what should be) unison tuning, all set to Squarewave. By default only oscillator 1 will be turned on. Next, go back to the Edit menu and select "Pitch Bend amount" and set the pitch bend to Off. This ensures that pitch bend does not inadvertently affect your tuning. Before you begin to make any changes to the tuning, be sure that your Voyager has been turned on and running for 30 to 60 minutes, so that it can reach a stable operating temperature.

Next, connect your Voyager audio output to a tuner and use only the master Fine Tune control (lower left of the control panel next to the Glide rate knob) to adjust the master tuning until oscillator 1 is in proper tune. We tune to the low E on the keyboard, and then test the keyboard scaling by playing the E two octaves up on the keyboard. If this interval is set correctly, then there is generally very little error across the rest of the keyboard. Go to the Mixer section of the control panel and switch off Oscillator 1, and switch on oscillator 3. Do not adjust the oscillator 2 or 3 Frequency controls; leave them be so that your tuning is not thrown off by accident.

Play the low E on the keyboard and check the tuner; is Oscillator 3 in tune? Also, you could turn on oscillator 1 and listen for beating between the oscillators. If Oscillator 3 is not in tune at low E, then we need to make a few adjustments before setting the keyboard scaling.

First, adjust the multi-turn trimmer RT6 until oscillator 3 is exactly on pitch at low E. If you turned on Oscillator 1 also, you can adjust RT6 until there is no beating between oscillators. If this is confusing, turn off Oscillator 1 and listen only to Oscillator 3. It can help to set the Gate switch on the control panel to On/Ext. so that the note will continue to play while you make adjustments.

Next, set the Oscillator 3 Octave switch on the panel to 2'. Play the same low E key on the keyboard and check the tuning. If it is not in tune (should be E5, I think), adjust the multi-turn trimmer RT5 until oscillator 3 is exactly in tune at the 2' octave setting. Now switch back to 8' on oscillator 3 and play the low E key, and adjust RT6 if necessary to tune in E3 on your tuner. You may need to go back and forth a time or two between the above steps; when you are finished you should have an oscillator that is in tune at all of the octave settings when playing the same low E key.

A note: if the tuning is OK on all lower octaves but it is not correct at the 1' setting, you can adjust the single-turn trimmer RP14 to correct this.

OK, so now Oscillator 3 is in tune and can be scaled to the keyboard. Turn on Oscillator 1 and listen to be sure that oscillators 1 and 3 are still in unison on the low E. Do not adjust the tuning of oscillator 1! If the two oscillators are not quite in unison, adjust RT6 until they are.

Now play up two octaves on the keyboard; it will probably sound off-pitch. Very carefully, as it's quite sensitive, adjust the single-turn trimmer RP16 until oscillators 1 and 2 are in unison again. This will, unfortunately, have some effect on the Osc.3 Range adjustment, so you should play the low E again and see if the oscillators have drifted apart a bit. At this point you might want to switch off oscillator 1 and listen only to oscillator 3 as you fine-tune the adjustments. You will want to alternate between playing the low E and the E two octaves above it on the keyboard; use RT6 to adjust the low E to be in tune, and RP16 (with the utmost delicacy as it is so fiddly) to scale the keyboard such that the high E is in tune. Through all of these adjustments, do not change the panel knobs in any way apart from switching the various oscillators on and off using the mixer section.

This completes the tuning of Oscillator 3.


## END ##






Last edited by revstate; 30th October 2009 at 06:23 PM.. Reason: fixed links
Old 10th January 2009
  #13
Wow, thank you for the awesome info! Will definitely go through it to get my voyager in tune again. Thanks again!
Old 10th January 2009
  #14
ok, I took a stab at re-tuning my voyager for the past 2 hours but just barely got to the end of working on the first oscillator.

I was able to get osc1 to be in tune when playing the low E key and switching the octave switch from 32 to 1, and also got osc1 and osc2 to be synced up. But something is still wrong when I try to play the high E key (2 octaves up)... unfortunately it still gets flat when I play further up the keyboard.

Hopefully this will get sorted out once I finish all the steps, but its already 1am and I think I'll try it again once I get a good nights rest
Old 11th January 2009
  #15
Lives for gear
 

Quote:
Originally Posted by Fishy1500 View Post
ok, I took a stab at re-tuning my voyager for the past 2 hours but just barely got to the end of working on the first oscillator.

I was able to get osc1 to be in tune when playing the low E key and switching the octave switch from 32 to 1, and also got osc1 and osc2 to be synced up. But something is still wrong when I try to play the high E key (2 octaves up)... unfortunately it still gets flat when I play further up the keyboard.

Hopefully this will get sorted out once I finish all the steps, but its already 1am and I think I'll try it again once I get a good nights rest
It takes a bit of time [unless you work for moog]. ^_^ So don't worry if it takes you a while to get it done. If you accidentally mess something up, you can send it to moog and they will fix it. I doubt this will happen if you follow the instructions correctly. It was my first time tuning a synth, and even though it took me a while, I got it done. It's oddly fun though isn't it?

Ben
Old 11th January 2009
  #16
revstate, thank you again for the info on how to tune the voyager!

I went through it from start to finish today and now it is perfectly in tune It looks like my keyboard scaling was a tiny bit off, which caused it to become flat as I moved up the keyboard.

If anyone else encounters this, just go through the instructions that revstate gave and you'll be back in tune after putting some detailed effort in
Old 12th January 2009
  #17
Lives for gear
 

YAY!
Old 10th March 2009
  #18
Gear maniac
 
Lectra's Avatar
 

Thanks for the info...
I'm having exactly the same problem with my MM 'Signature edition'
When you play the low F it's almost a 1/2 note (!) off when you compare it with the highest 'F"
Old 10th March 2009
  #19
ah yeah, that was the exact same problem that I encountered. Going through the diagrams and the steps for tuning that Revstate posted is exactly what needs to be done. All it takes is a bit of patience and a few hours and you'll get it perfectly back in tune
Old 13th January 2014
  #20
Gear interested
 

Thanks again for sharing with us the schematics and details for tuning a minimoog voyager.
Unfortunately I have not been able to complete this tuning.
I have been working only on Oscillator 1 that had wrong keyboard scaling (osc 2 & 3 were fine).
I followed the described steps :
- init parameters, turn off osc 2 & 3, turn on osc1, set on octave 8''
- Used the single-turn trimmer RP9 to set back the good keyboard scaling : I managed to do this but the strange thing is that I had to turn it almost completely at the maximum range (clockwise)
- Used RT2 to tune low E
- at this point, osc 1, 2, 3 are perfectly in tune on all keyboard range
- BUT, when I switch osc 1 to an other octave, oscillator scaling is wrong > when I switch up (e.g 2"), notes are lower than they should be, when I switch down (32") they are higher than they should be. Problem is that RT1 that is supposed to fix this has no effect (I've been turning it several tens of turns clockwise or counterclockwise with no changes in the pitch, not even slightly)
- however, if I set keyboard scaling to a lower setting (making keyboard scaling wrong), turning RT1 has an effect on pitch and I'm able to scale oscillators correctly.

How weird is that?
I have been sending requests to Moog support with no response since last week. Maybe this problem could be simply fixed with one of the others trimmers from which I don't know the purpose.
Did anyone had similar problem here guys?
Old 13th January 2014
  #21
Gear interested
 

Just seen Revstate was banned from this forum... I'm so desperaaaaate...
Old 14th November 2014
  #22
Gear Nut
 
MissleMissle's Avatar
I'm bumping this thread because I need help. I've been trying to tune my second oscillator for a while which has terrible keyboard tracking and although I tuned the low E on all octave knotches, it's still gets flatter and flatter across the keys.

The thing is that the RP21 single turn screw does absolutely nothing no matter what I do to it.

I've tuned one perfectly and 3 is tuned just fine also but osc 2 is just not working. It's starting to bum me out.
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